#include<iostream>
# include<conio.h>
using namespace std;

namespace first_space{
	void func()
	{
		cout << "inside first_space" << endl;
	}
}
namespace second_space{
	void func()
	{
		cout << "inside second_space" << endl;
	}
}
int main()
{
	first_space::func();
	second_space::func();
	_getch();
}